using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.HttpsPolicy;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using Microsoft.OpenApi.Models;

namespace WebApiSample {
    public class Startup {
        public Startup (IConfiguration configuration) {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices (IServiceCollection services) {

            services.AddControllers ();
            services.AddSwaggerGen (c => {
                c.SwaggerDoc ("v1", new OpenApiInfo { Title = "WebApiSample", Version = "v1" });
            });
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure (IApplicationBuilder app, IWebHostEnvironment env) {
            if (env.IsDevelopment ()) {
                app.UseDeveloperExceptionPage ();
                app.UseSwagger ();
                app.UseSwaggerUI (c => c.SwaggerEndpoint ("/swagger/v1/swagger.json", "WebApiSample v1"));
            }

            app.UseHttpsRedirection ();

            app.UseRouting ();

            app.Use (async (context, next) => {
                try {
                    Endpoint endpoint = context.GetEndpoint ();
                    if (endpoint != null) {
                        // endpoint.RoutePattern
                        // endpoint.Metadata
                        foreach (var metadata in endpoint.Metadata) {
                            // Console.WriteLine(metadata.GetType().FullName);
                            if (metadata is Microsoft.AspNetCore.Mvc.Controllers.ControllerActionDescriptor controllerActionDescriptor) {
                                Console.WriteLine ($"Controller: {controllerActionDescriptor.RouteValues["controller"]}, Action: {controllerActionDescriptor.RouteValues["action"]}");
                                break;
                            }
                        }
                    }

                    await next ();
                } catch (Exception ex) {
                    Console.WriteLine (ex);
                }

                if (context.Response.StatusCode == 404) {
                    context.Response.Clear ();
                    await context.Response.WriteAsync ("Page not found");
                    await context.Response.StartAsync ();
                }
            });

            app.UseAuthorization ();

            app.UseEndpoints (endpoints => {
                endpoints.MapControllers ();
            });
        }
    }
}